GROM

The Operational Maneuvering Response Group (GROM) is Poland's elite counter-terrorism and special forces unit, founded on 13 July 1990. Its name is both an acronym and the Polish word for "thunder", and it has been known as one of the European Union's best special forces units. GROM units were responsible for arresting Yugoslavian and Kosovan war criminals during the 1990s and 2000s, and it was also deployed to Afghanistan during the Afghanistan War and to Iraq during the Iraq War. In 2014, GROM had 650 personnel.